The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1998
Filed:
Jul. 25, 1997
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Switches (11, 12) select either of refresh address counters (6a, 6b) in accordance with a refresh bank set signal (.phi.REFADD) when a bank refresh signal (.phi.BANKREF) is activated. An internal bank address (int.BA) serves as the refresh bank set signal (.phi.REFADD) to control the switch (12) and the refresh address counter (6a or 6b) designated by the internal bank address (int.BA) performs a count operation in synchronization with a refresh clock (.phi.REFCLK). The switch (11) outputs either of refresh addresses (Ref.Add.sub.-- A<0:10>, Ref.Add.sub.-- B<0:10>) which is updated. With this configuration provided is an SDRAM which allows access to data during a refresh operation.